Heater for water.



R. WADHAM.

HEATER FOR WATER.

APPLIOATION FILED DEG.18, 1907.

1,028,979, Patented June 11,1912.

5 SHEETS-SHEET l.

3 Wm; Wtoz LUMBIA R. WADHAM. v HEATER FOR WATER.

APPLICATION FILED DEG. 18, 1907.

Patented Jun 11, 1912.

,5 SHEETS-SHEET 2.

Wibwmm COLUMBIA PLANOHRAPH (IO-,WASNINGTDN, D. c.

R. WADH AM.

- HEATER FOR WATER.

r APPLICATION FILED DEC. 18, 1907. v 1,028,979, Patented June 11,1912.

5 SHEETS-SHEET 3.

R. WADHAM.

HEATER FOR WATER.

APPLICATION IILBI) DEG.18, 1907.

Patented June 11, 1912.

5 SHEETS-SHEET 4.

COLUMBIA FLANOGRAP (IO-,WASHINOTON n c R. WADHAM.

HEATER FOR WATER.

APPLICATION FILED no. 18, 1907.

Patented Junnll, 1912.

5 SHEETS-SHEET 5.

ROBERT WADHAM, OF STOCKHOLM, SWEDEN.

HEATEB FOR WATER.

Specification of Letters Patent. Patented June 11, 1912 Application filed December 18, 1907. Serial No. 407,024.

for Water and Similar Apparatus, of

which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain improvements in. heaters for liquids and similar apparatuses, and more particularly 1n feed water heaters or economizers, and the 010- j ect of the invention is to provide an apparatus having a novel and improved arrangement of blowing-off means, ment may bility of damage from superheating of the apparatus. v r

The invention consists in an apparatus of the character described comprising a pluof connected sections,'means for suprality be heated thereto, blowingplying liquid to off means connected with the respective secj tions, and a normally closed conduit adapted for connection with the respective sections for supplying liquid under pressure thereto.

The invention also contemplates certain novel features of the construction, and combinations and arrangements of the several parts of the improved heating apparatus, whereby certain important advantages are attained, and the device is rendered simpler, less expensive, and otherwise better adapted and more convenient for use, all as will be hereinafter fully set forth.

The novel features of the invention will be carefully defined in the claims.

In the accompanying drawings, wherein I have illustrated several embodiments of my invention-Figure 1 is a side elevation of a feed water heater embodying my improvements, portions thereof being broken away and shown in section for illustration of certain features of construction which will be hereinafter referred to; Fig. 2 is an end elevation of the device constructed as shown in Fig. 1; Fig. 3 is a partial plan view of the device; Fig. 4L is a partial sectional side elevation showing a modified ar- Stockholm, in the of this general character ofa simple and comparatlvely lnexpensive 'constructioni whereby slime or sedibe conveniently and effectively blown off or ejected therefrom without l1a-' rangement of the connections at the upper part of the heating sections of the apparatus; Fig. 5 is a view somewhat similar to Fig. 4, but illustrating another modified arrangement of the connections at the'upper parts of the heating sections of the apparatus; Fig. 6 is aview somewhat similar to Fig. 1, but showing still another modified arrangement of the improved heating apparatus; Fig. 7 is a sectional view taken horizontally through the central part of the apparatus constructed as shown in Fig. 6; and Fig. 8 is a side elevation somewhat similar to Figs. 1 and 6, but showing still another modified formation of the improved heating apparatus.

In these views ments applied to heating apparatuses constructed in a well known way from a plurality of connected heating sections through which the feed water or other liquid to be heated is adapted to circulate, the structure shown in Figs. 1, 2 and 3, comprising a series of similar sections 2, 2, arranged side by side and each formed from a plurality of tubes 1, 1, extended parallel and closely adjacent to each other, and joinedat their lower ends by a transversely extended lower headeror coupling member 13, while their upper ends are similarly joined by a transversely extended upper header or coupling member 25. The upper and lower headers or coupling members 25 and 13 of the several sections are herein shown extended closely adjacent side by side in order to afford a compact structure.

The outermost or opposite end sections, 2, 2 of the series comprised in the heating apparatus have their lower headers or members 13, 13, as herein shown, provided with connections 49 and 50, respectively, the connection 49 at one end of the series of sections being adapted for communication with a pipe 81 leading from a source of feed water supply, while the connection 50 at the opposite end of the series of sections is adapted for communication with a pipe 82, leading to a boiler A or the like, for the supply of feed water or other liquid thereto. A check valve 82 will usually be arranged in the pipe 82 connecting such boiler with the improved feed water heater, in order to prevent back-flow of water from the boiler during the blowing-off of slime or sediment from the sections 2, 2.

I have shown my improve- The several sections 2 2 comprised in the series have their upper headers or members 25, 25, connected together in pairs by means of U-shaped coupling or connecting pipes 38, and the intermediate sections of the series, or those sections intervening between the opposite end sections whereat the supply and discharge connections 49 and 50 are located, have their lower headers or members 13, 13, coupled or connected together in pairs by means of U-shaped pipe connections 37, 37, the connections 38 and 37 at top and bottom of the apparatus alternating wit-h each other in a well known way so that the feed water supplied at the connections 49 at one end of the series is caused to-circulate first up and then down through the several sections 2, 2, in such a manner as to be uniformly heated before being discharged at the connection 50 at the opposite end of the series.

The several upper pipe connections 38, 38, have their upper parts provided with alined extensions 39, 39, which are connected or coupled together in such a manner as to produce a conduit or passage extended transversely across the upper part of the series of heating sections 2, 2, and adapted for communication with the upper ends of the several sections through the upper headers or members 25, 25, wherewith said pipe connections 38, 38, are coupled. One end of this conduit or passage is also adapted for communication, by way of a pipe or conduit 59, with the water supply pipe 81 at one end of the series of sections. 84 represents a threeway cock or valve controlling the communication of the feed water supply pipe 81 with the coupling 49 at one end of the series of sections, and also with the pipe or conduit 59 leading to said passage or conduit which as above stated, is produced across the up per parts of the sections.

At the end of the apparatus opposite to that at which the pipe or conduit 59 leading from the source of feed water supply communicates with the conduit or passage formed from the alined upper extensions 39, 39 of the upper pipe connections 38, 38, the said conduit .or passage has connection with a safety valve 61, and at suitable intervals along the length of said transversely extended conduit or passage are arranged check valves 43, 43, which serve to permit the flow of water in one direction along said conduit or passage when the valve 84 is 0perated to supply water from pipe 81 to said conduit or passage, but effectively prevent the flow of water in a reverse direction through said transversely extended passage or conduit when said valve 84 is operated to establish communication from said pipe 81 to the coupling 49, so that in the normal operation of the apparatus, the water is caused to circulate successively through the several sections 2, 2, and is prevented by the said check valves 43, 43, from traversing the said transversely extended passage or conduit from the section at one end of the series to that at the other end of the series.

At their lower ends the heating sections 2,2 are adapted for communication with a blow-off pipe 58 through which slime and sediment may be discharged from time to separately blown off for the removal of the slime and sediment therefrom.

In the normal operation of the apparatus,

the cook or valve 84 being moved to break communication between pipes 81 and 59, and to establish communication between pipe 81 and connection 49, the feed water is supplied from said pipe 81 to the section 2 at one end of the apparatus, and by reason of the peculiar alternatingarrangement of the upper and lower connections or members 38 and 37, is compelled to traverse each of the several end and 1ntermed1ate sectlons 1n succession, in a well known way so as to be uniformly heated.

/Vhen it is desired to blow ofi" the slime and sediment from the apparatus, the valve 84 is operated to reverse the communication of the feed water supply pipe 81, so that the supply of feed water instead of being delivered to the apparatus by way of the coupling 49, is conveyed by the pipe or conduit 59 to and through the passage or conduit formed by the alined upper extensions 39, 39, of the upper connections or members 38, to the upper parts of the several sections 2, 2 of the series comprised in the apparatus. The valve 84 having thus been manipulated to supply the feed water to the upper parts of the sections, the several blow-off outlets 52, 52, at the lower ends of said sections are capable of being opened either successively or in any desired order so as to permit the slime or sediment to be effectively discharged from each such section 2, 2. In order to attain the best results, the water should be supplied to the upper parts of the sections, during the blowing-off operation, under some considerable pressure, and this pressure may be attained in any desired manner, as by pumping for example. The safety valve 61 serves to guard against accidents during the blowing-off operation, due to the increase of pressure beyond that which the ,outlets are opened is apparatus is designed to withstand. In this way breakdown due to excessive rise of pressure in the apparatus before the blow-off efiectively prevented.

The construction and arrangement of the parts is such that the full water supply and pressure may be concentrated, during the blowing-off operation, at the section orsections 2 connected with a single blow-off outlet, the valves 43 permitting such water supply to pass freely along the conduit or passage formed of the extensions 39,39 of the-connections 38, 38, to and through such section or sections at which the blow-ofi outlet 52 is opened, and in this way it will be evident that an extremely high velocity of discharge may be attained during the blowing-off operation, such as is desirable for effective discharge of slime and sediment. Furthermore it will be evident that the structure and arrangement of the parts of the improved apparatus is such as to insure against superheating or burning of the heating sect-ions during the blowing-0E operation, since the several sections are maintained filled with water throughout said operation, and are thereby eifectively pr0- tected against the effects of the heat to which they are exposed.

From the above description of my improvements it will be seen that the apparatus constructed according to my invention is of an extremely simple and comparatively inexpensive nature and is particularly well adapted for use by reason of the facility and convenience with which it may be operated, and of the efiiciency with which the slime and sediment may be discharged herefrom, and it will also be obvious from the above description that the device is susceptible of some modification without material departure from the principles and spirit of the invention and for this reason I do not desire to be understood as limiting myself to the precise formation and arrangement of the several parts herein set forth in carrying out my invention in practice. For example, in some cases, struction shown in Fig. 4: may be employed with good results. In this construction the transversely extended conduit or passage across the upper parts of the heating sections is formed within a pipe or shell 66, having a transverse diaphragm 67 extended lengthwise along it so that the said pipe or shell is divided centrally to produce the said transversely extended passage or conduit above said diaphragm as shown at 68 on the drawing. 59 represents the pipe or conduit for supplying water under pressure to said transversely extended passage or,

conduit as in the preceding construction.

The space within the pipe or shell 66 below the diaphragm 67 is divided vertically by means of partltions 65, 65, into a pluthe modified con-' rality of chambers or compartments 63, 63, each of which has communication, by way of a port provided with a check valve 69, with the conduit or passage 68, so that water is permitted to be supplied from said conduit or passage 68 to said chambers or compartments 63, 63, during the blowing-01f operation. The check valves. 69 serve to prevent the reverse flow of water'from the chambers 63, 63 to the passage or conduit 68 during the normal operation of the apparatus. At the lower part of the pipe or shell 66 are provided nipples or pipe connections 70, 70, which serve to connect the sections 2, 2, in pairs with the several compartments or chambers 63, 63, so that, during the normal use of the apparatus the water is caused to circulate from one section 2 through one of the chambers or compartments 63 to the adjacent section 2 as in the preceding structure.

In the construction shown in Fig. 5, the transversely extended passage or conduit across the upper parts of the heating sections is produced within a transversely extended shell or pipe 74, which is connected with the pipe or conduit 59 and has ports 75, controlled by valves 7 6 and communicating with pipe connections 7 3 which unite the upper ends of the heating sections in pairs as in the constructions heretofore de scribed. The operation of this form of the apparatus is similar to that of the construction shown in Fig. 4.

In the structure shown in Figs. 6 and 7, the transversely extended conduit or passage across the upper parts of the heating sections is formed from the alined'and connected pipes or couplings 7 7 which connect the sections at their upper ends in pairs,

valves 7 9 being interposed at intervals along the conduit or passage for operation in a manner similar to the valves 43 in the structure shown in Fig. 1, to compel the water to circulate through the sections in succession during the normal use of the apparatus.

similar arrangement of alined pipes or couplings 7 8 and interposed valves is provided at the lower ends of the heating sections, the said valves 7 9 and 80 insuring the circulation of the water successively through the several heating sections in the normal use of the device, and the said alined pipe connections 78 forming a blow-ofl conduit connected with the lower ends of the respective heating sections and provided with an outlet at which the slime and sediment are discharged'during the blowing-off operation. In this form of the apparatus, the several sections are blown off simultaneously through the outlet 85 when the valve 84 is manipulated to permit the water supply to ordinary cock or valve 86 is substituted for the three-way cock 85 of the preceding structures, the water supply through the pipe or conduit 59 to the upper ends of the heating sections'being controlled directly by means of cocks or valves 88. The arrangement of the lower pipe connections 78 and valves 80 to form=the blow-off conduit is the same as that shown in Figs. 6 and 7.

Although, as herein shown, the Water is adapted to circulate through the heating sections successively during the normal use of the apparatus, I do not desire to be understood as limiting myself in this respect,

since the particular construction of the heating apparatus to which my improvements are applied for use is immaterial to the invention. The heating sections may be connected in many other ways without departure from the present invention.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. In heaters for liquids, the combination of heating sections adapted for the circulation of liquid from a source of supply and provided with an outlet for the discharge of such liquid to a boiler or the like, a source of liquid under pressure independent of the boilerincluding a normally closed conduit,

and means for connecting said conduit with the sections to supply liquid under pressure to said sections for blowing off the same.

2. In heaters for liquids, the combination of heating sections adapted for the circulation of liquid from a source of supply and provided with an outlet for the discharge of such liquid to a boiler or the like, a source of liquid under pressure independent of the boiler including a normally closed conduit, means adjacent to the lower ends of the sections for blowing off the same and means for connecting said conduit with the sections to supply liquid under pressure to said sections for blowing off the same.

3. In heaters for liquids, the combination of heating sections adapted for the circulation of liquid from a source of supply and provided with an outlet for the discharge of said liquid to a boiler or the like, and controllable means for supplying liquid to said heating sections under pressure independent of the boiler for blowing ofi the sections.

4. Inheaters for liquids, the combination of heating sections adapted for the circulation of liquid from a source of supply and provided with an outlet for the discharge of such liquid to a boiler or the like, means for blowing off the sections, a source of liquid under pressure independent of the boiler including a normally closed conduit, independent connections for supplying liquid under pressure from said conduit to the several heating sections for blowing off the same and means for controlling the supply of liquid under pressure from the conduit through each such independent section.

5. In heaters for liquids, the combination of heating sections adapted for the circulation of liquid, means for blowing OK the sect-ions, controllable means for supplying liquid to be heated to the sections, other controllable means for supplying liquid under pressure to said sections for blowing off the same, and a safety valve connected {with the sections and adapted for operation upon the rise of pressure therein.

6. In heaters for liquids, the combination of heating sections adapted for the circulation of liquid, means for blowing off the sections, a normally closed conduit for liquid under pressure, means for connecting said conduit with the sections to supply liquid under pressure to said sections for blowing off the same, and a. safety valve connected with said normally closed conduit and adapted for operation upon the rise of pressure therein.

7. In heaters for liquids, the combination ofheating sections having connections eX tended between them at their upper and lower parts and affording circulation of liquid to be heated through said sections, means for blowing off the lower "parts, the connections at the upper parts of the sections being adapted for communication with each other to form a passage for the flow of liquid under pressure to each section, means to supply liquid under pressure to said passage, and means to prevent backflow of liquid through said passage; I

8. In heaters for liquids, the combination of heating sections having connections at their upper and lower parts affording com munication for the circulation of liquid to be heated, means for blowing off the sections at their lower parts, the connections at the upper parts of the sections being adapted for communication with each other to form a passage for the flow of liquid under pressure, means to supply liquid under pressure to one end of said passage, means to prevent backfiow of liquid through said passage, and a safety valve connected with the other end of said passage.

9. -A heater for liquids having a plurality of heating sections adapted for communication to permit circulation of liquid to be heated through said sections, a passage eX- tended across and communicating with the upper parts of the sections for supplying liquid under pressure to said sections, blowing-oftmeans at the lower parts of the sections, means for supplying liquid under pressure to the passage at the upper parts of the sections, and check valves arranged to control backflow of liquid through said passage.

10. In heaters for liquids, having a pluheating section,

rality of heating sections adapted for communication to permit circulation of liquid through them from a source of supply and provided with an outlet for the discharge of such liquid to a boiler or the like, a source of liquid under pressure independent of the boiler, means for supplying liquid under pressure from such source to the upper part of each section and a valved blow-off connection at the lower end of each section,

11. In heaters for liquids, the combination of a plurality of heating sections having connections for the circulation of liquid to be heated through them from a source of supply and provided with an outlet for the discharge of such liquid to a boiler or the like, a blow-oil connection for each heating section, a source of liquid under pressure independent of the boiler including a normally closed conduit, and controllable means for supplying liquid under pressure from said conduit to each heating section.

12. In heaters for liquids, the combination of a plurality of heating sections having connections for the circulation of liquid to be heated through them from a source of supply and provided with an outlet r'or the discharge ofsuch liquid to a boiler or the like, a blow-off connection for each heating sect-ion, a source of liquid under pressure independent of the boiler including a normally closed conduit and controllable means for supplying liquid under pressure from said conduit to each heating section.

13. In heaters for liquids, the combination of a plurality of heating sections having connections for the circulation of liquid to be heated through them, controllable means for supplying liquid to be heated to said sections, a blow-cit connection for each a conduit for liquid under pressure, and controllable means for supplying liquid under pressure from said conduit to each heating section and comprising Copies of this patent may be obtained for check valves to prevent backfiow of liquid through said conduit.

14:. A heater for liquids having a plurality of heating sections, a pipe extended across the upper parts of said sections and divided longitudinally and transversely to produce a conduit having means for the supply of liquid under pressure thereto, and a series of separated chambers each communicating with said conduit and with two heating sections, check valves to prevent backflow of liquid from said chambers to said conduit, and blowing-off means at the lower parts of the sections.

15. A heater for liquids having a plurality of heating sections having couplings at their upper parts connecting them in pairs, a pipe extended across the upper parts of said sections, means to supply liquid under pressure to said pipe, valved connections extended from said pipe to the upper parts of said sections, and blowing-off means at the lower parts of the sections.

16. A heater for liquids having a plurality of heating sections, alined communicating pipe connections extended across the upper and lower ends of the sections, means for supplying liquid under pressure to the lower pipe connection at one side of the apparatus, check valves inserted in the upper and lower pipe connections and compelling circulation of the liquid to be heated successively through the several heating sections, blowing-off means connected with the lower parts of the sections, and means for supplying liquid under pressure to the upper communicating pipe connections.

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

, ROBERT WADHAM. Witnesses:

CARL FRIBERG,

ROBERT APELGREN.

five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

